* Basically all trumpet backbores can be made in a cornet size version. Here I have only listed the most common ordered cornet backbores.Click Contact if your requested cornet backbore is not in the list!
 
L: Guaranteed precision response; Beautiful, centered tone. Similar to Bach 24. 
1: Standard bore of the G1-mouthpiece, classical orchestral backbore, big sound!
G: Original backbore of the G2, Round, soft tone, for symphonic use, ideal combination with G2 cup
2: Round, soft tone, for symphonic use, ideal combination with G2 cup or G1 cup.
3: Accurate response, brighter, bearing tone.
5: Great sound for piccolo, long seele for good easy feeling in the high register.
(seele is the cylindrical space in between the throat and the actual backbore)
7: Bright and transparent sound, backbore with higher resistance.
P: Universally applicable orchestral backbore, excellent sound.
J: Narrow, lighter, clear sound; Good height, good for piccolo trumpet use.
N: Free blowing backbore, good results on piccolo trumpet.
66: Surpasses all expectations regarding tone and endurance.
25: Narrow backbore, easy to play, precise height.Good for piccolo playing.